body {
  font-family: Arial, sans-serif;
  background: #f2f2f2;
  padding: 20px;
}

.container {
  max-width: 600px;
  margin: auto;
  background: white;
  padding: 25px;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1, h2 {
  text-align: center;
  color: #333;
}

label {
  display: block;
  margin-top: 10px;
  font-weight: bold;
}

input, select {
  width: 100%;
  padding: 8px;
  margin-top: 5px;
  margin-bottom: 10px;
  border-radius: 5px;
  border: 1px solid #ccc;
}

button {
  width: 100%;
  background-color: #28a745;
  color: white;
  padding: 10px;
  font-size: 16px;
  margin-top: 20px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

button:hover {
  background-color: #218838;
}

.result {
  background: #e9f7ef;
  padding: 15px;
  margin-top: 20px;
  border-radius: 5px;
  color: #155724;
  font-weight: bold;
}